======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '220'
                                          'artist'  'Morphine'
                                     'text_people'  'Mark Sandman'
                                         'release'  'Cure for Pain'
                                           'title'  'a head with wings'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'alternative', 'jazz', 'blues', 'rock']"
                                     'discogstags'  "['hardcore', 'gabber', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '1993'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-indie-rock'
                                             'bpm'  '84.951'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

'PRIV:WM/MediaClassPrimaryID:¼}`Ñ#ãâK\x86¡H¤*(D\x1e'  PRIV(owner='WM/MediaClassPrimaryID', data=b'\xbc}`\xd1#\xe3\xe2K\x86\xa1H\xa4*(D\x1e')
'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'PRIV:WM/Provider:A\x00M\x00G\x00\x00\x00'          PRIV(owner='WM/Provider', data=b'A\x00M\x00G\x00\x00\x00')
'PRIV:WM/UniqueFileIdentifier:A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x001\x009\x003\x001\x008\x002\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x001\x001\x002\x004\x005\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x001\x001\x007\x000\x006\x009\x002\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x001\x009\x003\x001\x008\x002\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x001\x001\x002\x004\x005\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x001\x001\x007\x000\x006\x009\x002\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:\x88XÏÙY)\x1aH\x892ú¡\x93\x11\x11\x1d'  PRIV(owner='WM/WMCollectionGroupID', data=b'\x88X\xcf\xd9Y)\x1aH\x892\xfa\xa1\x93\x11\x11\x1d')
'PRIV:WM/WMCollectionID:\x88XÏÙY)\x1aH\x892ú¡\x93\x11\x11\x1d'  PRIV(owner='WM/WMCollectionID', data=b'\x88X\xcf\xd9Y)\x1aH\x892\xfa\xa1\x93\x11\x11\x1d')
'PRIV:WM/WMContentID:\x03ñ 9\x07\x1c\x1bD\x86Ó\\Z?5v\x07'  PRIV(owner='WM/WMContentID', data=b'\x03\xf1 9\x07\x1c\x1bD\x86\xd3\\Z?5v\x07')
'TALB' (Album/Movie/Show title)                     'Cure for Pain'
'TBPM' (BPM (beats per minute))                     '84.951'
'TCOM' (Composer)                                   'Mark Sandman'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-indie-rock'
'TDRC' (Recording time)                             '1993'
'TIT2' (Title/songname/content description)         'a head with wings'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Morphine'
'TPE2' (Band/orchestra/accompaniment)               'Morphine'
'TPUB' (Publisher)                                  'Rykodisc'
'TRCK' (Track number/Position in set)               '6'
'TXXX:Engineer'                                     'ngineer'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['hardcore', 'gabber', 'electronic']
'TXXX:lastfmtags'                                   ['indie', 'alternative', 'jazz', 'blues', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.33 dB'
'TXXX:replaygain_track_peak'                        '0.506342'

========================== row from database ==========================
                                              'id'  1340514
                                            'path'  /data/Music/Bulk/00poprockelectronic/Morphine/Cure for Pain/06 - a head with wings.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  220
                                           'genre'  ifs-songwriter-indie-rock
                                        'filesize'  5293977
                                           'mtime'  1621697475
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 06 ifs songwriter indie rock
                                      'tag_artist'  Morphine
                                     'tag_release'  Cure for Pain
                                       'tag_title'  a head with wings
                                             'bpm'  84.951
                                    'search_title'  'a':1 'head':2 'wings':4 'with':3
                                   'search_artist'  'morphine':1
                                  'search_release'  'cure':1 'for':2 'pain':3
                                     'search_rest'  '00poprockelectronic':1 'ifs':2 'indie':4 'rock':5 'songwriter':3
                                    'search_combo'  '00poprockelectronic':9 'a':1A 'cure':6C 'for':7C 'head':2A 'ifs':10 'indie':12 'morphine':5B 'pain':8C 'rock':13 'songwriter':11 'wings':4A 'with':3A
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'alternative', 'jazz', 'blues', 'rock']
                                        'tag_date'  1993
                                     'discogstags'  ['hardcore', 'gabber', 'electronic']

============================== file details ==============================
                                           'mtime'  1621697474.6250741  (2021-05-22 17:31:14)
                             'size'  5293977